BE517671A - - Google Patents

Info

Publication number
BE517671A
BE517671A BE517671DA BE517671A BE 517671 A BE517671 A BE 517671A BE 517671D A BE517671D A BE 517671DA BE 517671 A BE517671 A BE 517671A
Authority
BE
Belgium
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE517671A publication Critical patent/BE517671A/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes or tubes with decorated walls
    • B21C37/207—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes or tubes with decorated walls with helical guides

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
BE517671D 1933-06-21 BE517671A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER88172D DE715188C (de) 1933-06-21 1933-06-21 Schaltungsanordnung fuer Elektronenroehren

Publications (1)

Publication Number Publication Date
BE517671A true BE517671A (enrdf_load_stackoverflow)

Family

ID=7417921

Family Applications (2)

Application Number Title Priority Date Filing Date
BE517671D BE517671A (enrdf_load_stackoverflow) 1933-06-21
BE406292D BE406292A (enrdf_load_stackoverflow) 1933-06-21

Family Applications After (1)

Application Number Title Priority Date Filing Date
BE406292D BE406292A (enrdf_load_stackoverflow) 1933-06-21

Country Status (2)

Country Link
BE (2) BE406292A (enrdf_load_stackoverflow)
DE (1) DE715188C (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2872832A (en) * 1956-11-15 1959-02-10 Appel Process Ltd Plural workpiece forging machines
DE1111908B (de) * 1956-08-16 1961-07-27 Appel Process Ltd Haemmermaschine zum Verformen von Werkstuecken durch Gesenkwerkzeuge
US3017793A (en) * 1959-02-16 1962-01-23 Appel Process Ltd Forming tools, machines and methods

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1111908B (de) * 1956-08-16 1961-07-27 Appel Process Ltd Haemmermaschine zum Verformen von Werkstuecken durch Gesenkwerkzeuge
US2872832A (en) * 1956-11-15 1959-02-10 Appel Process Ltd Plural workpiece forging machines
US3017793A (en) * 1959-02-16 1962-01-23 Appel Process Ltd Forming tools, machines and methods

Also Published As

Publication number Publication date
BE406292A (enrdf_load_stackoverflow)
DE715188C (de) 1941-12-16

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